Editorial: Justice takes aim at ICE’s ‘chilling’ courthouse stings

California’s Chief Justice Patrician Guerrero is fed up with one of the more nefarious Trump administration policies: targeting immigrants for detention as they attend scheduled court hearings. She issued a stern warning and announced some steps that will help assure crime victims and witnesses don’t need to fear coming forward.

She warned about the “potential chilling effect” of this policy, which has taken place routinely in California. “I use this opportunity to reiterate that California’s courts are...